First day of my last year of highschool

So if I was living in the usa I'd be a junior rn but where i live highschool is grades 7 to 11. Anyway Entering 11th grade now and man.. it feels weird being the oldest ones in the school. Im kinda really scared for next year which will be kind of like pre-university. Hoping I do well enough this year that i can do the classes i want next year.